1JZ gt3076r dyno'd

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BigSupe

New Member
Jun 16, 2007
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The engine is stock internally
540cc injectors
gt3076r 0.82 housing
Emanage blue
3" exhaust
FMIC
etc

1.3bar 372.5whp

Just wondering why when turning the boost past 1.3bar no more power was made is that the wall for a stock lump with a gt30? Don't get me wrong it is very quick but I was hoping for 400-450bhp

Timing wasn't able to be adjusted as even 2degrees on the emanage and she would start to knock

p1311627_1.jpg
 
Evilempire1.3JZ-GTE

Evilempire1.3JZ-GTE

SF what a waste of supras
Jun 22, 2006
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Dont boost more then 17-18psi on premium with out running better octane (you have to back off boost & timming & run rich) otherwise use race gas or meth water to get more power / octane and boost E85 is also a good alternative!

Your HP is about right though with more boost / better gas gets you better timming less ping you should hit your goal with no problem! Keep up the good work!
 
Gritz

Gritz

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Aug 1, 2008
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tissimo;1311803 said:
Lack of octane. 98 RON is about equal to 93 PON (US gas).
Click to expand...

Theres guys making 500+ hp on pump(93 octane)...explain that...
 
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BigSupe

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Jun 16, 2007
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tissimo;1311803 said:
Lack of octane. 98 RON is about equal to 93 PON (US gas).
Click to expand...
So if I was running 102ron I could turn the boost up to 1.4-1.5bar?
Is the reason that When I boost past 1.3 no more power is made because the ecu detects knock and pulls the timing

Worth mentioning I found out shell vpower is 99ron over here
 
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BigSupe

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If they are my only options then I don't think I want to go down the road of race fuel or meth, just want as much bhp on pump fuel as I can reliably get from my setup
 
Evilempire1.3JZ-GTE

Evilempire1.3JZ-GTE

SF what a waste of supras
Jun 22, 2006
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tissimo;1312476 said:
102 might help at 1.4-1.5, but youll probably need 110+ or so.



facepalm.jpeg
Click to expand...

+1 Thank you

Not only that you can not make more HP then this to the crank
Garret said:
* Ideal for medium displacement engines making up to 525 hp
Click to expand...
Here is your map
700382-1&2&3comp_t.jpg

Sourced from http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT30/GT3076R_700382_12.htm

So if your engine was perfect and everything was tuned yes you would make 525 at the crank and 475 to the wheels you can not get more hp out of a turbo then it is efficient and designed for.

With that said tune your car and run 110+ octane
E85 99¢ per gallon if made at home otherwise ~$2.50 per gallon at a station.
methwater 99¢ at wallmart per gallon and can be installed with do it yourself instruction or by snow products ~700 for the kit.
Racegas $10 per gallon.

There is other tricks like propane its 110 octane but not a lot of people know about it needs a completely custom fuel system but if you do use it you could add a natural gas spiket to your home since butane is 93 octane its fine also up to premium gas boost I thought about this when gas was $5/gallon

I would decide based on how offten you want to push your car to the limits? often go with E85 &meth water every other blue moon use racegas

You will not peak your car until you support your mods with the correct fuel otherwise your ecu engine will back off to keep you from melting the pistons.
 
tissimo

tissimo

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Apr 5, 2005
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BigSupe;1312506 said:
If they are my only options then I don't think I want to go down the road of race fuel or meth, just want as much bhp on pump fuel as I can reliably get from my setup
Click to expand...

Thats about all youre going to get with that turbo on pump. You can install cams and what not to give a little more power.
 
rwd

rwd

Member
May 15, 2008
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quebec
i made 432whp and 419 pound of torque with this turbo on 94 octane
but i have cam and power fc and alot other stuff
 
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slideways2004

New Member
Oct 7, 2008
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Houston
BigSupe;1311627 said:
The engine is stock internally
540cc injectors
gt3076r 0.82 housing
Emanage blue
3" exhaust
FMIC
etc

1.3bar 372.5whp

Just wondering why when turning the boost past 1.3bar no more power was made is that the wall for a stock lump with a gt30? Don't get me wrong it is very quick but I was hoping for 400-450bhp

Timing wasn't able to be adjusted as even 2degrees on the emanage and she would start to knock
Click to expand...

2 things will make a huge difference on this motor. aftermarket cams and a standalone. With those 2 things, you'll probably see a 100whp gain
 
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BigSupe

New Member
Jun 16, 2007
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England
aphxero;1316724 said:
I really wanna see tq curve. What rpm are you hitting max boost in 4th?
Click to expand...

Max boost is hit at 4100rpm 1.3bar

The torque line is the fainter line on the dyno printout 340ftlb @ 5100rpm (original post)


Just found a garage locally that does 99 octane which contains 5% bio-ethanol worth using over shell vpower?
 
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